JPH01116191A - Shaft excavator - Google Patents

Shaft excavator

Info

Publication number
JPH01116191A
JPH01116191A JP27350787A JP27350787A JPH01116191A JP H01116191 A JPH01116191 A JP H01116191A JP 27350787 A JP27350787 A JP 27350787A JP 27350787 A JP27350787 A JP 27350787A JP H01116191 A JPH01116191 A JP H01116191A
Authority
JP
Japan
Prior art keywords
ring
lower half
tail ring
excavation
upper half
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP27350787A
Other languages
Japanese (ja)
Inventor
Kazutoshi Inoue
井上 一敏
Masaaki Inage
稲毛 正昭
Masataka Uozumi
雅孝 魚住
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Construction Co Ltd
Original Assignee
Mitsui Construction Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Construction Co Ltd filed Critical Mitsui Construction Co Ltd
Priority to JP27350787A priority Critical patent/JPH01116191A/en
Publication of JPH01116191A publication Critical patent/JPH01116191A/en
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PURPOSE: To improve safety and working efficiency by performing excavation while protecting the natural ground by annular pieces provided on the outer periphery of a lower half part of a front messer divided into an upper/lower parts and by alternately advancing the upper and lower half parts like a measuring worm. CONSTITUTION: Many annular pieces having the tips equipped with cutting edge parts 10a are axially slidably attached on the outer periphery of a lower half part of a front messel formed by slidably engaging cylindrical upper and lower half parts with each other, and excavation is performed while protecting the peripheral natural ground. The upper half part and the lower half part of the front messel 10 are alternately advanced like a measuring worn, and excavation and lining work are simultaneously performed. Therefore, the necessity to use a casing pipe is eliminated, and water stopping performance can be improved.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明、地表面から地中へ垂直に掘削される立坑の掘削
装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a shaft excavation device that excavates vertically from the ground surface into the ground.

(従来の技術) 従来、この種の立坑を掘削する装置では1例えば地上か
ら懸吊した昇降可能なスカフオードをホルダーツヤツキ
等によって坑底部の上方側壁に支持させ、該スカフォー
ドに垂設させたグラブ/9ケツト等の掘削機で坑底部の
地山を掘削し、この掘耐土砂はスカフオード内を通過す
るキプルで地上へ排出すると共に、ヌカフォード上では
型枠を用いて立坑の側壁に覆工コンクリートを打設する
ようにしていた。尚、坑底部の地山が岩盤の場合には穿
孔機で当該岩盤に穿孔し、発破によって岩盤を粉砕した
後に前記グラブバケット等の掘削機とキブルを用いてズ
リの排出処理が行なわれる。
(Prior art) Conventionally, in this type of equipment for excavating a shaft, a scaffold that can be raised and lowered, suspended from the ground, is supported on the upper side wall of the bottom of the shaft using a holder, etc., and is hung vertically on the scaffold. The ground at the bottom of the shaft is excavated with an excavator such as a grab/9-ket, and the excavation-resistant soil is discharged to the ground by a kipple that passes through the scaffold, and at the same time, it is covered with formwork on the side wall of the shaft on the Nukaford. They were planning to pour concrete. If the ground at the bottom of the mine is bedrock, a hole is drilled into the bedrock using a drilling machine, the rock is crushed by blasting, and then the waste is discharged using an excavator such as the above-mentioned grab bucket and kibble.

(発明が解決しようとする問題点) しかしながら前記し次従来技術によると、掘削作業と覆
工作業が別々に施工されるので作業能率が低下すること
や、地盤が軟弱な場合には安全な掘削作業が得にくい等
の欠点があった。このために格別にケーシングチューブ
を必要とするが、その婬込み作業が大変であることや、
超深度で大口径の立坑掘削には適さない欠点があった。
(Problems to be Solved by the Invention) However, according to the prior art described above, excavation work and lining work are carried out separately, which reduces work efficiency, and when the ground is soft, it is difficult to excavate safely. There were disadvantages such as difficulty in obtaining work. For this purpose, a special casing tube is required, but the work of putting it in is difficult,
There were drawbacks that made it unsuitable for ultra-deep, large-diameter vertical shaft excavation.

また、覆工コンクリートの打継ぎ目が完全に一体接合せ
ず、止水性の問題もあった。そこで本発明では、前記し
た各問題点を改善しうる立坑掘削装置の提供を目的とす
る。
Additionally, the concrete lining joints were not completely joined together, which caused water-stopping problems. Therefore, an object of the present invention is to provide a shaft excavation device that can improve each of the above-mentioned problems.

(問題点を解決する九めの手段) 本発明の要旨は、いずれも円筒状をしたと半部と下半部
とが摺動可動に係合して一体に構成され。
(Ninth Means for Solving the Problems) The gist of the present invention is that both cylindrical half parts and lower half parts are slidably engaged and integrally constructed.

該下半部の外周は先端に刃口部金備えた多数の分割され
た環片ピースを軸線り向へ摺動可能に組立てたフロント
メツセルで構成され、該フロントメツセルには半径方向
へ突出可能な複数のブレーキシューが設けられると共に
、当該フロントメツセルを内側から保持する基体に装着
されたフロントジヤツキによって各壌片ピースが坑底部
側へ分割推進させて周辺地山を保抛し、前記基体には注
水された坑底部を掘削する旋回自在なブームカッターと
、掘削された土砂全排出する泥水排出装置とが装着され
、前記上半部は前記フロントメツセルと摺動可能にオー
バーラッグするアウターテールリングと、該アウターテ
ールリングの内側へドーナツ状に収着されたインナーテ
ールリングを備え、前記インナーテールリングにはアウ
ターテールリングと協働して覆工コンクリート打設用の
空隙部を形成する型枠の一端が係止され、rvI記アウ
ターテールリングとインナーテールリング間には空隙部
内に打設されたコンクリートを先設の覆工コンクリート
側へプレス装置が装着され、 前記基体とアウターテールリング間には連結シリンダー
が設けられ、該連結シリンダーは前記フロントツヤツキ
と協働してと半部と下半部とを尺取り虫状に前進できる
ようにして成る立坑掘削装置。
The outer periphery of the lower half is composed of a front metsu cell, which is made up of a number of divided ring pieces each having a cutting edge metal at the tip, assembled so as to be able to slide in the axial direction, and the front metsu cell has a radial direction. A plurality of protruding brake shoes are provided, and a front jack attached to a base that holds the front metsu cell from the inside allows each piece of rock to be divided and propelled towards the bottom of the mine to protect the surrounding ground. , A swingable boom cutter for excavating the bottom of a well filled with water and a muddy water discharge device for discharging all excavated earth and sand are attached to the base, and the upper half is slidably over the front metsu cell. The inner tail ring has a lagging outer tail ring and an inner tail ring that is absorbed into the inner side of the outer tail ring in a donut shape, and the inner tail ring has a cavity for pouring lining concrete in cooperation with the outer tail ring. One end of the formwork forming the base body is locked, and a press device is installed between the outer tail ring and the inner tail ring described in rvI to press the concrete poured into the gap to the previously installed lining concrete side, and A shaft excavating device comprising a connecting cylinder provided between the outer tail rings, and the connecting cylinder cooperating with the front tail ring to move the top half and the lower half forward in an inchworm-like manner.

(実施例) 以下に本発明を図示の実施例に基づいて説明する。いず
れも円環成金した下部支持枠1と上部支持枠2とを連結
部材3で一体に接合して基体4が形成され、該基体4の
中心には支持腕4a、4bを弁して立坑の坑底部5を掘
削する掘削装置であるブームカッター6の基部側が旋回
動自在に装着されている。前記基体4の下部支持枠1側
にはフェースジヤツキ7が装着されておシ、該フェース
ツヤツキ7は掘削する坑底部5の地山8を押圧して当該
地山の***を防止するものである。−H前記基体4の上
部支持枠2側にはフロントジヤツキ9の一端側が装着さ
れており、該フロントジヤツキ9の他端側はフロントメ
ツセル10に装着されている。このフロントメツセル1
0は先端側に刃口部10aを有する分割された多数の環
片ピースが前記基体4の外周に沿って円環状に組み豆て
られ、前記フロントジヤツキ9の伸長によって基体4の
外周で軸線り向へ各環片ピースと個別にスライドさせ、
掘削部の周辺地山の併護r行う土留め装置である。また
、前記基体4の上部支持枠2側には泥水排出装置が設け
られている。該泥水排出装置はバキュームタンク11と
、当該バキュームタンク11内の泥水を排泥管12を介
して立坑の上部側へ圧送する水中ポンプ13と、バキュ
ームタンク11を減圧して吸泥管14金介して坑底部5
の泥水をバキュームタンク内に吸引させるバキューム4
ング15によって構成されている。尚。
(Example) The present invention will be explained below based on the illustrated example. A base body 4 is formed by integrally joining a lower support frame 1 and an upper support frame 2, which are made of circular metal molding, with a connecting member 3. Support arms 4a and 4b are provided at the center of the base body 4 to form a vertical shaft. The base side of a boom cutter 6, which is a drilling device for excavating the pit bottom 5, is rotatably mounted. A face jack 7 is attached to the lower support frame 1 side of the base body 4, and the face jack 7 presses the ground 8 at the bottom 5 of the mine to be excavated to prevent the ground from rising. It is. -H One end side of a front jack 9 is attached to the upper support frame 2 side of the base body 4, and the other end side of the front jack 9 is attached to a front meter cell 10. This front metsu cell 1
0, a large number of divided ring pieces each having a cutting edge 10a on the tip side are assembled in an annular shape along the outer periphery of the base body 4, and by extension of the front jack 9, an axis line is formed on the outer periphery of the base body 4. Slide each ring piece individually in the opposite direction,
This is an earth retaining device that also protects the ground surrounding the excavation area. Further, a muddy water discharge device is provided on the upper support frame 2 side of the base body 4. The muddy water discharge device includes a vacuum tank 11, a submersible pump 13 that pumps the muddy water in the vacuum tank 11 to the upper side of the shaft through a mud drainage pipe 12, and a submersible pump 13 that depressurizes the vacuum tank 11 and pumps the muddy water in the vacuum tank 11 through a 14-metal mud suction pipe. bottom of the pit 5
Vacuum 4 that sucks muddy water into the vacuum tank
15. still.

吸泥管14は、前記ブームカッター6に沿って延在し、
ブームカッター6と一緒に旋回される。また、排泥管1
2から排出された泥水は、立坑掘削装置の上Hに設置さ
れたスカフオード(図示せず)上でスクリーンによって
水と土砂に分離され、水は再度坑底部5に戻されると共
に、土砂はキプルによって立坑の外部へ排出される。
The mud suction pipe 14 extends along the boom cutter 6,
It is rotated together with the boom cutter 6. In addition, sludge pipe 1
The muddy water discharged from the shaft 2 is separated into water and sand by a screen on a scaffold (not shown) installed on the top H of the shaft excavation equipment, and the water is returned to the bottom 5 of the shaft again, and the sand is separated by a kipple. It is discharged to the outside of the shaft.

次に、土留め装置である前記フロントメツセル10のと
端側には覆工装置が設けられておシ、該覆工装置はいず
れも円環状のアウターテールリンダ16とプレスリンダ
17およびインナーテールリンダ18等を篇えている。
Next, a lining device is provided on the end side of the front mesh cell 10, which is an earth retaining device, and the lining device includes an annular outer tail cylinder 16, a press cylinder 17, and an inner tail It is equipped with Linda 18 grade.

アウターテールリンダ16は二重筒状で、下端側の外筒
が前記フロントメツセル10の上端側に嵌合されると共
に、上端側の外筒には周辺地山と摺接するテール・ぐツ
キン16a’を有し、該アウターテールリンダ16は前
記上部支持枠2間に設けられた連結用シリンダー19の
伸縮によって、フロントメツセル10に沿って摺動しう
るよう構成されている。インナーテールリング18は前
記アウターテールリンダ16の内側に配備され、テール
ジヤツキ20を介して一端側がアウターテールリンダ1
6に連結されると共に、他端側では特殊型枠21の端部
を保合保持している。プレスリング17は、前記アウタ
ーテールリンダ16の内外筒間に摺動可能に嵌合され、
アウターテールリンダ16との間に設けられたグレスノ
ヤツキ22を伸長させて空隙部23内に新たに打設され
たコンクリートをプレスし、先設された覆工コンクリ−
ト24や周辺地山に密着させるものである。前記特殊型
枠21は、−リンダ中の少くともいずれか1ケ所(実施
例では4ケ所)には空隙部23内に覆工コンクリートを
充填するための注入口が穿設され、該注入口には給送ホ
ース25が着脱可能に装着されると共に、覆工コンクリ
ート24を打設して給送ホース25を取外した後の注入
口を閉塞させる遮閉板26のスライドツヤツキ27が装
着されている。また、特殊型枠21の一リング中には複
数の細孔が穿設されておシ、該細孔に吸気パイプ28を
挿通させて前記覆エコンクリート金充填する際に空隙部
23内の吸気を行うようにし、当該細孔は覆工コンクリ
ート打設後に目地打金注入して閉基させる。尚、符号り
、はアウターテールリンダ16およびインナーテールリ
ンダ18の摺動距離、符号L2はプレスリング17の移
動距離である。
The outer tail cylinder 16 has a double cylindrical shape, and the outer cylinder on the lower end side is fitted into the upper end side of the front metsu cell 10, and the outer cylinder on the upper end side has a tail gutskin 16a that makes sliding contact with the surrounding ground. The outer tail cylinder 16 is configured to be able to slide along the front mesh cell 10 by expanding and contracting a connecting cylinder 19 provided between the upper support frames 2. The inner tail ring 18 is disposed inside the outer tail cylinder 16, and one end is connected to the outer tail cylinder 1 through a tail jack 20.
6, and holds the end of the special formwork 21 at the other end. The press ring 17 is slidably fitted between the inner and outer cylinders of the outer tail cylinder 16, and
The newly placed concrete in the cavity 23 is pressed by extending the gresnow jack 22 provided between the outer tail cylinder 16 and the previously placed lining concrete.
It is intended to be brought into close contact with the ground 24 and the surrounding ground. The special formwork 21 is provided with an injection port for filling the cavity 23 with lining concrete at at least one location (four locations in the embodiment) in the cylinder; The feeding hose 25 is removably attached, and a slide gloss 27 of the shielding plate 26 is attached to close the injection port after the lining concrete 24 is placed and the feeding hose 25 is removed. There is. In addition, a plurality of pores are drilled in one ring of the special formwork 21, and when the suction pipe 28 is inserted through the pores and the overburden concrete is filled with gold, the air in the cavity 23 is filled. The pores will be closed by injecting joint metal after pouring the lining concrete. Note that the reference numeral L2 is the sliding distance of the outer tail cylinder 16 and the inner tail cylinder 18, and the reference numeral L2 is the moving distance of the press ring 17.

更に、前記フロントメツセル10にはブレーキシュ−2
9が、アウターテールリンダ16には方向修正装置30
が各々設けられている。該ブレーキシュー29は、フロ
ントメツセル10の一部にヒンソ部材を介して、開閉可
能に取着され、一端がと部支持枠2に支持されて他端が
ブレーキシュー29の内面に緊着されたブレーキシリン
ダー31の伸長によって、外面を周辺地山に食い込ませ
て立坑掘削装置自重降下を防止して安定支持させるもの
であシ1本実施例では90度間隔で4ケ所に設けられて
いる。また方向修正装置30は、アウターテールリンダ
16の一部にヒンソ部材32を弁して開閉可能に取着さ
れ、当該ヒンジ部材32はアウターテールリンダ16と
上部支持枠2間に設けられた連結用シリンダー19の伸
長によって揺動し、方向修正装置30を周辺地山に食い
込ませてアウターテールリンダ16側を保持させると共
に、フロントメツセル10側からアウターテールリング
16i引離す方向へ押圧して立坑掘削装置の上半部のガ
向修正金行うものである。そして前記立坑掘削装置を用
いて立坑を掘削する除には、まずコンクリートによる土
留め用の擁壁を築造し。
Furthermore, the front metsu cell 10 is provided with brake shoes 2.
9, the outer tail cylinder 16 has a direction correction device 30.
are provided for each. The brake shoe 29 is attached to a part of the front mesh cell 10 via a hinge member so as to be openable and closable, and one end is supported by the heel support frame 2 and the other end is tightly attached to the inner surface of the brake shoe 29. By extending the brake cylinders 31, the outer surface of the brake cylinders 31 bites into the surrounding ground to prevent the vertical shaft excavator from falling due to its own weight and provide stable support.In this embodiment, the brake cylinders 31 are provided at four locations at 90 degree intervals. Further, the direction correction device 30 is attached to a part of the outer tail cylinder 16 so as to be openable and closable by using a hinge member 32. The cylinder 19 swings as the cylinder 19 expands, causes the direction correction device 30 to bite into the surrounding ground to hold the outer tail cylinder 16 side, and presses the outer tail ring 16i away from the front metsu cell 10 side to excavate the shaft. This is to correct the orientation of the upper half of the device. Before excavating a shaft using the shaft excavation equipment, a concrete retaining wall is first constructed.

その内側を掘削装置が収容しうる大きさで立坑を掘る。A vertical shaft is dug inside the shaft to a size that can accommodate the drilling equipment.

次いで立坑内にクレーン等で吊下げた掘削装置を投入し
、ブレーキシュー29を拡開して掘削装置を固定する。
Next, the excavating device suspended by a crane or the like is introduced into the shaft, and the brake shoes 29 are expanded to fix the excavating device.

次いでフロントツヤツキ9を伸長させ、と部支持枠2を
反力受としてフロントメツセル10を坑底部の地山に突
出させて地山を保護し、続りてフロントジヤツキ9を縮
短させて基体4を尺取り虫状にフロントメツセル1oに
追随させる。尚、この場合に連結シリンダー19はフリ
ーの状態にしておく。次いでズームカッター6vi−旋
回させながら注水された立坑内の坑底部を掘削し、その
掘削土砂は吸泥管14等からなる泥水排出装置を介して
排出されると共に、水と土砂に分離させる。
Next, the front jack 9 is extended, and the front jack 9 is made to protrude into the ground at the bottom of the mine by using the shaft support frame 2 as a reaction force receiver to protect the ground, and then the front jack 9 is shortened. The base body 4 is made to follow the front metsu cell 1o in the shape of an inchworm. In this case, the connecting cylinder 19 is left in a free state. Next, the zoom cutter 6vi is rotated to excavate the bottom of the water-injected shaft, and the excavated soil is discharged through a muddy water discharge device consisting of a mud suction pipe 14 and the like, and is separated into water and soil.

次いで前記連結用シリンダー19i縮短して、アウター
テールリンダ16とインナーテールリング18とと、プ
レスリング1−7および特殊型枠21と共にフロントメ
ツセル10側へ摺動させる。これにより先設された覆工
コンクリ−ト24の下ガに空間が生ずるので、先設され
た特殊型枠21に連設する態様で新たな特殊型枠21 
’!l−11Jング張設し、その外周に空隙部23を形
成する。この追加された特殊型枠21に設けられたジヤ
ツキ27によって遮閉板26を摺動させ、開口に給送ホ
ース25を装着して空隙部23内にコンクリートを打設
すると共に、当該コンクリートはプレスジヤツキ22の
伸長によってプレスして圧密させる。
Next, the connecting cylinder 19i is shortened and the outer tail cylinder 16, the inner tail ring 18, the press ring 1-7, and the special mold 21 are slid toward the front mesh cell 10 side. As a result, a space is created under the previously installed concrete lining 24, so a new special formwork 21 is installed in a manner that is connected to the previously installed special formwork 21.
'! A gap 23 is formed around the outer periphery. The blocking plate 26 is slid by the jacks 27 provided on the added special formwork 21, the feed hose 25 is attached to the opening, and concrete is poured into the cavity 23, and the concrete is placed in a press jack. It is pressed and consolidated by elongation of 22.

尚、テールジヤツキ20は特殊型枠21?1リング分だ
け張設できる空間が得られるように微調整するものであ
る。
The tail jack 20 is used to finely adjust the special formwork 21 so that there is enough space for one ring to be stretched.

以下、前記の繰返し作業によって掘削と覆工を同時に進
行させる。
Thereafter, the excavation and lining are carried out simultaneously by repeating the above-mentioned operations.

(発明の効果) 前記した実施例でも明らかなとおシ1本発明の立坑掘削
装置では、分割推進される下半部のフロントメツセルに
よって格別にケーシングパイプを用いることなく坑底部
周辺の地山が保護された状態で泥水掘削されるので、地
山の緩みが無く安全且つ確実に超深度で大口径の立坑掘
削作業ができる。また、その上半部側では下半部と尺取
り虫状に追随する覆工装置によって覆工作業が同時施工
されるので極めて能率的であると共K、打設コンクリー
トはプレスによって圧密されるので止水性が良好な覆工
コンクリートを得ることができる。
(Effects of the Invention) One advantage that is clear from the above-mentioned embodiments is that in the shaft excavation apparatus of the present invention, the ground around the bottom of the shaft can be excavated by the front metsu cell of the lower half that is propelled in parts, without using a special casing pipe. Since muddy water excavation is carried out in a protected state, there is no loosening of the ground, and it is possible to safely and reliably excavate large diameter shafts at ultra-deep depths. In addition, lining work is carried out simultaneously on the upper half by a lining device that follows the lower half in an inchworm-like manner, making it extremely efficient. Lining concrete with good water resistance can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は1本発明の実施例による立坑掘削装置の縦断面
図、第2図は同横断面図である。 〔符号の説明〕 1・・・下部支持枠、   2・・・L部支持枠、3・
・・連結部材、   4・・・基体。 4a、4b・・・支持腕、  5・・・坑底部、6・・
・ブームカッター、  7・・・フェースジヤツキ、8
・・・地山、      9・・・フロントツヤツキ、
10・・・フロントメツセル、10 a・・・刃口部、
11・・・バキュームタンク、12・・・排泥管。 13・・・水中イング、  14・・・吸泥管、15・
・・バキュームポンプ、 16・・・アウターテールリ
ング、17・・・プレスリング、18・・・インナーテ
ールリング。 19・・・連結用シリンダー、20・・・テールジヤツ
キ、21・・・特殊型枠、   22・・・プレスジヤ
ツキ。 23・・・空隙部、    24・・・覆工コンクリー
ト、25・・・給送ホース、  26・・・遮閉板。 27・・・スライドジヤツキ、28・・・吸気ノぐイブ
、29・・・ブレーキシュー、30・・・方向修正装置
、31・・・ブレーキシリンダー。 32・・・ヒンソ部材、 Ll、L2・・・摺動距離。 第7図
FIG. 1 is a longitudinal cross-sectional view of a shaft excavation apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view thereof. [Explanation of symbols] 1... Lower support frame, 2... L part support frame, 3...
...Connection member, 4...Base body. 4a, 4b...support arm, 5...bottom, 6...
・Boom cutter, 7...Face jack, 8
...Ground, 9...Front gloss,
10...Front metsu cell, 10a...Blade mouth part,
11...Vacuum tank, 12...Sludge drainage pipe. 13... Underwater ing, 14... Sludge suction pipe, 15.
...Vacuum pump, 16...Outer tail ring, 17...Press ring, 18...Inner tail ring. 19...Connection cylinder, 20...Tail jack, 21...Special formwork, 22...Press jack. 23...Void portion, 24...Lining concrete, 25...Feeding hose, 26...Blocking plate. 27...Slide jack, 28...Intake nozzle, 29...Brake shoe, 30...Direction correction device, 31...Brake cylinder. 32...Hinso member, Ll, L2...Sliding distance. Figure 7

Claims (1)

【特許請求の範囲】[Claims]  いずれも円筒状をした上半部と下半部とが摺動可動に
係合して一体に構成され、該下半部の外周は先端に刃口
部を備えた多数の分割された環片ピースを軸線方向へ摺
動可能に組立てたフロントメッセルで構成され、該フロ
ントメッセルには半径方向へ突出可能な複数のブレーキ
シューが設けられると共に、当該フロントメッセルを内
側から保持する基体に装着されたフロントジャッキによ
つて各環片ピースが坑底部側へ分割推進させて周辺地山
を保護し、前記基体には注水された坑底部を掘削する旋
回自在なブームカッターと、掘削された土砂を排出する
泥水排出装置とが装着され、前記上半部は前記フロント
メッセルと摺動可能にオーバーラップするアウターテー
ルリングと、該アウターテールリングの内側へドーナツ
状に取着されたインナーテールリングを備え、前記イン
ナーテールリングにはアウターテールリングと協働して
覆工コンクリート打設用の空隙部を形成する型枠の一端
が係止され、前記アウターテールリングとインナーテー
ルリング間には空隙部内に打設されたコンクリートを先
設の覆工コンクリート側へプレスするプレス装置が装着
され、前記基体とアウターテールリング間には連結シリ
ンダーが設けられ、該連結シリンダーは前記フロントジ
ャッキと協働して上半部と下半部とを尺取り虫状に前進
できるようにして成る立坑掘削装置。
Both have a cylindrical upper half and a lower half that are slidably engaged and are integrally constructed, and the outer periphery of the lower half is made up of a number of divided ring pieces each having a cutting edge at the tip. It consists of a front messel assembled with pieces slidable in the axial direction, and the front messel is provided with a plurality of brake shoes that can protrude in the radial direction, and is attached to a base that holds the front messel from the inside. Each ring piece is separated and propelled toward the bottom of the mine by a front jack to protect the surrounding ground, and the base is equipped with a boom cutter that can freely rotate to excavate the bottom of the mine that has been injected with water, and a boom cutter that discharges the excavated earth and sand. a muddy water discharge device is installed, and the upper half includes an outer tail ring that slidably overlaps the front messel, and an inner tail ring that is attached to the inside of the outer tail ring in a donut shape, One end of a formwork that cooperates with the outer tail ring to form a cavity for pouring lining concrete is locked to the inner tail ring, and a mold is placed in the cavity between the outer tail ring and the inner tail ring. A press device is installed to press the installed concrete to the previously installed lining concrete, and a connecting cylinder is provided between the base body and the outer tail ring, and the connecting cylinder cooperates with the front jack to press the upper half. A vertical shaft excavation device in which the upper half and the lower half can move forward in an inchworm-like manner.
JP27350787A 1987-10-30 1987-10-30 Shaft excavator Pending JPH01116191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27350787A JPH01116191A (en) 1987-10-30 1987-10-30 Shaft excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27350787A JPH01116191A (en) 1987-10-30 1987-10-30 Shaft excavator

Publications (1)

Publication Number Publication Date
JPH01116191A true JPH01116191A (en) 1989-05-09

Family

ID=17528846

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27350787A Pending JPH01116191A (en) 1987-10-30 1987-10-30 Shaft excavator

Country Status (1)

Country Link
JP (1) JPH01116191A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0261293A (en) * 1988-08-29 1990-03-01 Daiho Constr Co Ltd Manufacture of tunnel of multiple lane type
JP2003041879A (en) * 2001-08-02 2003-02-13 Mitsui Constr Co Ltd Underwater excavation method and device by shaft shield machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0261293A (en) * 1988-08-29 1990-03-01 Daiho Constr Co Ltd Manufacture of tunnel of multiple lane type
JP2003041879A (en) * 2001-08-02 2003-02-13 Mitsui Constr Co Ltd Underwater excavation method and device by shaft shield machine

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